Attachment for hydrocarbon-engines.



F. G. FULBERTH. ATTACHMENT FOR HYDROCARBON E NGINES.

APPLICATION FILED JULY I41 191] Patented June 15, 191-").

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Specification of Letters Patent. Patented Hie 15 .1915.

Application med Jul 14,1911. Serialfio.638 ,li36.

To all whom it may concern Be it known that I, FREDERICK G. For.- BERTH, a citizen of the United States, and resident of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Attachments for Hydrocarbon-Engines, of which the following is a specification.

The present invention relates to an attachment for motor vehicles, being an improvement in power tirepumps of that character or type referred to in an earlier application Serial Number 594,526,. filed November 28, 1'910,'in which the pump is adapted to be actuated directly by, without having its piston connected with, the piston in a cylinder of the vehicle engine.

The particular object of the present invention is to provide a construction in which the pump is adapted to be detachably connected with a relief cock such as is commonly rovided on the heads of cylinders of interna combustion engines.

In the accompanying drawings: Figure 1 is an elevation of a portion of a cylinder, of a motor vehicle engine having an embodiment of the invention applied thereto: Fig.

'2 is a vertical sectional view; Fig.3 is a view in elevation with the pump removed.

In the drawings 1 indicates the cylinder of amotor vehicle engine shown as provided with awater jacket 2, extending over its head, and a piston 3. As the invention is adapted to be applied to engines of various forms and types the partsof the engine herein referred to are illustrated merely conventionally.

4 is a relief cock which is connected with the top of the cylinder and communicates with the internal chamber thereof above the piston 3 in the well-known manner. The particular form of pet cock illustrated differs from those commonly employed in having an internallv threaded socket 5 formed at its outer end about the bore or passage through which it communicates with the interiorof theeneine cylinder when its plug is in open position, and such socket is surrounded by a flange 6 providing a seat for the support of the air pump.

The pump illustrated comprises a cylindrical barrel 7 provided at its outer end with the inlet and outlet valves 8. 9. the latter communicating with a pipe 10 adapted to be connected. as by a flexible tube 11. with the inflating valved tube are. are. At its lower end the pumpis provided with-a tubular extension 12 ada' ted to enter the socket 5 in the relief coc and having a reduced section 13 adapted to extend into the passage or duct in said cocksubstantially to the seat for the turning plug 14 thereof. The section 12 of the tubular extension on the pump is provided with a thread adapted to eng e the thread in the socket 5 so that by a slight turning movement the pump may be firmlysecured to or detached from the cock 4. The stem 15 of the pump piston is of such diameter that it extends freely through the extension on the pump and is adapted to pass through the opening in the plug 14 of the relief cock and through the passage leading from such plug to the interior of the engine cylinder 1. Said stem is of such length that when the piston connected thereto is at the desired upward limit of its movement the lower end of the stem will contact with the engine piston 3 when the latter has reached the limit of its upward stroke. A coiled spring 16, ar-

' ranged within the pump barrel and having its ends connected respectively with the piston and the lower end of such barrel, is adaptfd to maintain the stem 15 in cortact with the engine piston 3 throughout the stroke of the latter.

The flexible tube 11 may be provided with a pressure g ge 18 so that when the pump is in operation the user can readily determine the pressure which has been produced in the tire being inflated.

It will be seen that the improved attachment can be easily and quickly applied to or detached from the relief cock without in any manner affecting the connection between such cock and the engine cylinder.

The construction provides a relatively long or extended guide. forthe stem of the pump piston.

The attachment is very light and compact and by its use absolutely pure air is supplied to the tire and any desired pressure can be obtained. r

Having thus described the invention,what I claim and desire to secure by Letters Patent is:

1. The combination with the cylinder of a motor vehicle engine. of a relief cock secured in the head of the cylinder. a portable pump, comprising a cylinder provided with inlet and outlet ports and means detachably engaging the relief cock, and a piston, the stem of which extends through the cock into the interior of the engine cylinder, ,and means for holding the stein of the pump piston in contact with the engine piston.

The herein described attachment for motor vehicle engines comprising an air pump having a cylinder provided with suitable inlet and outlet ports and means forvdetachably engaging the outer end of a relief cock on an engine cylinder, a piston, the stem of which projects at all times beyond one end of the cylinder and is adapted to extend through the passage in said relief cock into contact with the engine piston, and means acting to reject said piston stem from the pump CYllIldEI to its maximum extent.

3. The combination with the cylinder of a threaded portion motor vehicle engine, of a relief cock secured in the head of the cylinder and provided at its outer end with an internally threaded seat, a portable pump, comprising a cylinder provided with inlet and outlet ports and having at one end a tubular adapted to be secured in said seat.at the outer end of the relief cock, :1 piston within said cylinder and having its stem extending through the relief cock into the engine cylinder, and means for holding the stem of the pump piston in contact with the engine piston.

In testimony whereof lt .nfiix my signature in presence of two witnesses.

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Witnesses:

- Tnnonon Heinz,

WILLIAM H. Knns. 

